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ASTM B631 Class A vs. 535.0 Aluminum

ASTM B631 class A belongs to the otherwise unclassified metals classification, while 535.0 aluminum belongs to the aluminum alloys. There are 16 material properties with values for both materials. Properties with values for just one material (17, in this case) are not shown. Please note that the two materials have significantly dissimilar densities. This means that additional care is required when interpreting the data, because some material properties are based on units of mass, while others are based on units of area or volume.

For each property being compared, the top bar is ASTM B631 class A and the bottom bar is 535.0 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 220
67
Poisson's Ratio 0.3
0.33
Shear Modulus, GPa 85 to 86
25

Thermal Properties

Latent Heat of Fusion, J/g 160
390
Melting Completion (Liquidus), °C 2680 to 2690
630
Specific Heat Capacity, J/kg-K 160
910
Thermal Conductivity, W/m-K 420
100
Thermal Expansion, µm/m-K 11
24

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 40 to 47
23
Electrical Conductivity: Equal Weight (Specific), % IACS 25 to 29
79

Otherwise Unclassified Properties

Density, g/cm3 15
2.6
Embodied Carbon, kg CO2/kg material 43
9.4
Embodied Energy, MJ/kg 670
160

Common Calculations

Stiffness to Weight: Axial, points 8.5
14
Stiffness to Weight: Bending, points 14
51
Thermal Diffusivity, mm2/s 180
42